Electric bell.



No. 842,911. l PATENTBD FEB. 5, 1907.

- H. E. REBVB.

ELECTRIC BELL.

APPLIGATION FILED 0dr.. 4. 1905. l

2 SHEETS-SHEET 1.

PATENTBD FEB. 5, 1907.y

H. E. RBEVB. ELECTRIC *BELL APPLloATIoN FILED 0014, 1905.

2 SHEETS-SHEET 2.

HENRY E. REEVE, OF BROOKLYN, NEW YORK.

ELECmiC BELL.

no. 842,911. l

Speccation of Letters Patent.

Y Patented Feb. 5, 1907.

Application led October 4, 1905. Serial No. 281,213.

l To a/ZZ whom Lt may coli/cern:

contact-*screws 7 and 7. The normal ten- Beit known thatLHENnYE. Risiivn,aciti-l i sion of the spring-arm i9 is in a directionto zen .of the United States, residing at Brooklyn, Kings county, New York, have invented certain new and useful improvements in Electric Bells, of which the following is a full, clear, and exact description.

My invention4 relates to improvements electric bells. v-

The objects of the invention are to provide a construction which may be manufactured economically, installed in any place without d anger of leakage of the current to its support, adjusted readily, and held securely in its proper adjustment, be free froin lia bility to injury, and less subject to deterioration due to oxidation or coating of the terminals th an structures heretofore in usev v lt consists iiifiinprovcnients the principles and details of the preferred forni of which are illustrated in the accompanying two sheets of drawings. y

Figure 1 is a front View of an electric-bell construction and circuit embodying the iinj Fig. 2 is an 2 proveniente of niy invention. end view of the saine, oinitting part of the circuit. Fig. 3 isa side view.` Fig. L1`\is a side view of the supporting-post for the arinature. v Fig. 5 is a perspective view ofthe vibrator contact nieniber. Fig. 6 is a perspective view of the arniature and striker, togetl ir with its pivot.

l indicates the buse, which iskusually construc ted of nietal.

- 2 and 3 are. the inain binding-posts, suitn ably insulated froin the base.

B'indicates a battery in Athe circuit.

S indicates a switch.

4 is the coil of an electronnigiict ofsuitable construction, supported by the base'.`

The contact-post lfoi' the nuiking and. breaking of the circuit is fbrinedof sheet inet-al :uid bifurcated. The `two parts 5 and 5/ aile insulated frein but riveted, securely to `the base.

6 is a claiiip-serew.

in thc post when the clamp-screw is yi'eleased, These two screws are tipped with platinum, as customary.

S is :i standard electrically connected tothe bindingqiost 3 and together with it 'riveted securely to the buse. v

9 is a spiiiig-zirin carried by the standard S and having' two contact-strips l0 and 10 hold the contact-strips 10 and 10 away from the contact-points 7 and 7. rIVhe end 11 of the arin is bent around the ends' of the contact-strips 10 and 10 to protect the same.

12 is a post constructed of sheet nietal, riv eted to ythe base and carrying a pivot-screw 18 at the top.

- 14; is a-clanip-screw for holding the pivot center-screw 13 in the position desired.

15 is `the pivot-pintor the armature. The armature is formed in two parts, a sheetinetal shell 16 and theironbar or magnetizable member 17 .l These are secured together vby rivets 18, which alsosecure the stop 19.

This stop is insulated from the armature and adapted to press against the vibrator-arm 9.

2O is thestiiker for the bell, the shank'of which extends into a recess'in the armaturebar 17 and is secured therein by pin 2 1, which is inserted before the bar 17 is inclosed inthe shell 16'... .v

' 22 is a tubular sleeverfor the armaturepivot, having its ends extending to the top land bottoni ofthe shell 16 and-,spun over.

23 is a perforation in the'shell 16, through which a tool niay be inserted for the purpose of indenting the metal of the sleeve into the iiietal of the pivot-pin 15.

24 indicates the result of the indentation on the back of the sleeve, formed by the anvil-tool` employed.

25 is an L-shaped support having one branch seated in the yoke 26 and clamped to the post 12 by screws 27 and 28. The nut 29 inay be rotated on the shank of the sup-- port 25.

30 is a spring attached to the projecting arni of the support 25 at one end and to the rear end olf the armature ineinber at the other end. The tension of the spring 30 inay be increased when the screws 27 and 28 are loosened by iiioving the nut 29 to the right or decreased by releasing ithe nut 29 and tap- ,j ping the support to inove it in the yoke 26 to 7 and 7 :irc two contact-screws adjustable l the right.

The spring 30 normally holds the armature.

contact-strips 10 and 10Q-against the points y of the contact-screws l 7/ 'When the circuit is closed, the current passes frein the binding-post 2 thro-ugh the magnet-coils to the contact-post, through the contact-screws adapted to cooperate, respectively, with the l 7 7, the contact-stripsl() 19', and arni 9 to I the binding-post 3. Tllieenergizing'of the magnet attractsthe armaturefaiid withdraws the stop 19, 'allowing' the arm 9,- with the contact-strips 10', to move awayfroni the contact-points 7 7', breaking the circuit,

which dener'gizes the magnet "and releases the armature. The necessary vibration is thus set up, but none of the current passes through to the base. The bell istherefore particularly adapted for installation where fireproof constructionfis demanded. There being two contact-points, there vis little danger of their both being disabledv at thessamel ap arent to those skilled in the ara-f atIclanni-."

l. In en el"`tric.'vibrator mechanism, a

ibase, an' ele'etroma' et,a pivoted armature therefor, a spring vi rator-arm, a spring com tact-strip secured thereto, a -staticnar post, anadjustable contact-screw carried. t ereby and contacting with said strip, an insulated stop carried by the amature and engaging the vibrator-arm, and an adjustable/tension device for said armature, the circuit passing through the magnet-coils, contact-screw, strip and vibrator-arm and being insulated from the base.

2. In an electric bell, a base, an electromagnet, binding-posts, a contact-post, a contact-screw carried thereby, a vibrator# arm connected to one .binding-post, a contact-strip carried thereby engaging said contact-screw, the end of said arm belng turned round the end of said contact-strip for guarding the same.

'3. In .an electric bell, a base, an electromagnet, a binding-post and a contact-post 'carried by said base, two independently-adu justable contact-screws carried by said contact-post, 'a vibrator-arm and two Contact strips carried thereby foil engagement with said contact-screws. 4

4. In an electric vibrator mechanism, an electromagnet, an armature therefor, ,a vibrator-arm having a plurality of \contactup by vibration in' indinaryv ]ustable contact members adapted to engage lsaid contact-points.

5. In an electric bell, a base, binding-posts therefor, an electromagnet, an armature therefor, a sup orting-post for said armature formed of s eet metal having two arms, and a .pivot eenter-'screwclamped between said arms.

6. In an electric bell, abase, an electromagnet carried'thereby, an armature therefor, a pivot forl said armature, a supportingpost for saidpivot, 'a supporting member carried by said post having a screw-threadeo arm, a yoke for clamping said arm to said post, an adjusting-nut on said screw-threaded portion, and a spring connecting said armature to said supporting member.

7. YIn anelectric bell, embase, an 'electromagnet, an armature therefor consisting of a sheet-metal shell and a magnetizable member or bar secured in said shell,.and means for pivotally supporting said armature.

' 8. Inan electric bell, a base, an' electromagnctcarried thereby, an armature forsaifl. magnet formed of a sheet-metal lshell and a bar, a pivot-pin for said armature, a tubular sleeve'for said pivot-pin, and means for securing said pivot-pin in said sleeve.

-9. An'electric-bell construction including a base, an electromagnet carried thereby, an

narmature therefor, having a part iormedof 'sheet metal, with side top and bottom, a pivot-pin passing through the top andbottom portions, a sleeve for said pivo t-in, the side of said sheet-metal portion'having :t perv foration ior access to said sleeve, anda por'- tion of said sleeve being indented 'into said pin.l v

l0. In an electric bell; abase, an electromagnet, an armature therefor farmed oi a sheet-metal shell and an iron bar, a striker member having one end seated in a recess in said bar, and a pin for securing said striker member to said bar, the head of said pin being covered by said shell.

11. In an electric vibrator mechanism, an electromagnet, a plurality ci vibrating contact-strips and a plurality of indepencientlyadjustable contaet-screws-coacting with said 105 strips.

HENRY E. REEVE. Witnesses.

G. A. ARMOKLE, Roer.' S. ALLrN. 

